As someone who has firsthand experience:
A. The same reason Amazon had/has such a hard time.
B. Google lacking the same persistence of Amazon (Consider all the products that are killed)
C. Google's hiring process. (They organizationlly do not know how to hire specialists)
>B. Google lacking the same persistence of Amazon (Consider all the products that are killed)
Yah, like the Stadia, Google's streaming gaming console thing. They even had a first party game development division for it. So exactly what OP was wondering about.